Abstract: Process for preparing a powdery organic peroxide formulation, said process comprises the following steps: a) preparing a reaction mixture comprising: 40-80 wt % water 10-25 wt % of an acid chloride or chloroformate, 1-4 wt % hydrogen peroxide, 2-8 wt % alkali metal hydroxide, 1-25 wt % of a phlegmatizer selected from the group consisting of ethylene glycol dibenzoate, phenyl benzoate, trimethylol propane tribenzoate, glyceryl tribenzoate, ethylene glycol ditoluate, 1,3-propanediol ditoluate, ethylene glycol 4-tert-butylbenzoate, ethylene glycol monobenzoate monotoluate, 2,3-butanediol dibenzoate, 4-methylphenyl benzoate acid ester, trimethylolpropane dibenzoate, and combinations thereof 0.002-0.20 wt % of a surfactant, and 0.25-5.0 wt % of an inert organic solvent, all percentages based on the weight of the reaction mixture, b) heating the reaction mixture at a temperature in the range 5-50° C.

Abstract: Process for preparing a powdery organic peroxide formulation, said process comprises the following steps: a) preparing a reaction mixture comprising: 40-80 wt % water 10-25 wt % of an acid chloride or chloroformate, 1-4 wt % hydrogen peroxide, 2-8 wt % alkali metal hydroxide, 1-25 wt % of a phlegmatizer selected from the group consisting of ethylene glycol dibenzoate, phenyl benzoate, trimethylol propane tribenzoate, glyceryl tribenzoate, ethylene glycol ditoluate, 1,3-propanediol ditoluate, ethylene glycol 4-tert-butylbenzoate, ethylene glycol monobenzoate monotoluate, 2,3-butanediol dibenzoate, 4-methylphenyl benzoate acid ester, trimethylolpropane dibenzoate, and combinations thereof 0.002-0.20 wt % of a surfactant, and 0.25-5.0 wt % of an inert organic solvent, all percentages based on the weight of the reaction mixture, b) heating the reaction mixture at a temperature in the range 5-50° C.

Abstract: A process for the polymerization of one or more monomers wherein at least one anhydride and at least one peroxy compound selected from inorganic peroxides, organic hydroperoxides, and peroxyacids are dosed during the polymerization reaction in a continuous or intermittent fashion to a reaction mixture comprising said monomers.

Abstract: A process for the polymerization of one or more monomers wherein at least one anhydride and at least one peroxy compound selected from inorganic peroxides, organic hydroperoxides, and peroxyacids are dosed during the polymerization reaction in a continuous or intermittent fashion to a reaction mixture comprising said monomers.

Abstract: The present invention relates to an aqueous dispersion polymerization process for preparing a (co)polymer wherein an organic peroxide is used as initiator (as a source of free radicals) during the polymerization process in conjunction with an effective amount of an organic peroxide stabilizing additive (controlling agent). The invention also relates to formulations comprising an organic peroxide and an effective amount of an organic peroxide stabilizing additive suitable for use in said polymerization process. The invention finally relates to 10 (co)polymers obtainable by the dispersion polymerization process.

Abstract: The invention relates to a process to make and use specific diacyl peroxides in polymerization reactions. The peroxides are produced and used in a polymerization process within a short timeframe in order to overcome stability issues associated with them.